diff --git a/yarn-project/aztec-node/src/aztec-node/config.ts b/yarn-project/aztec-node/src/aztec-node/config.ts
index 58729cbc0e82..3d92a28e3847 100644
--- a/yarn-project/aztec-node/src/aztec-node/config.ts
+++ b/yarn-project/aztec-node/src/aztec-node/config.ts
@@ -1,5 +1,10 @@
 import { type ArchiverConfig, archiverConfigMappings } from '@aztec/archiver/config';
-import { type L1ContractAddresses, l1ContractAddressesMapping } from '@aztec/ethereum';
+import {
+  type GenesisStateConfig,
+  type L1ContractAddresses,
+  genesisStateConfigMappings,
+  l1ContractAddressesMapping,
+} from '@aztec/ethereum';
 import { type ConfigMappingsType, booleanConfigHelper, getConfigFromMappings } from '@aztec/foundation/config';
 import { type DataStoreConfig, dataConfigMappings } from '@aztec/kv-store/config';
 import { type P2PConfig, p2pConfigMappings } from '@aztec/p2p/config';
@@ -24,13 +29,10 @@ export type AztecNodeConfig = ArchiverConfig &
   WorldStateConfig &
   Pick<ProverClientConfig, 'bbBinaryPath' | 'bbWorkingDirectory' | 'realProofs'> &
   P2PConfig &
-  DataStoreConfig & {
+  DataStoreConfig &
+  GenesisStateConfig & {
     /** Whether the validator is disabled for this node */
     disableValidator: boolean;
-    /** Whether to populate the genesis state with initial fee juice for the test accounts */
-    testAccounts: boolean;
-    /** Whether to populate the genesis state with initial fee juice for the sponsored FPC */
-    sponsoredFPC: boolean;
   } & {
     l1Contracts: L1ContractAddresses;
   };
@@ -43,6 +45,7 @@ export const aztecNodeConfigMappings: ConfigMappingsType<AztecNodeConfig> = {
   ...proverClientConfigMappings,
   ...worldStateConfigMappings,
   ...p2pConfigMappings,
+  ...genesisStateConfigMappings,
   l1Contracts: {
     description: 'The deployed L1 contract addresses',
     nested: l1ContractAddressesMapping,
@@ -52,16 +55,6 @@ export const aztecNodeConfigMappings: ConfigMappingsType<AztecNodeConfig> = {
     description: 'Whether the validator is disabled for this node.',
     ...booleanConfigHelper(),
   },
-  testAccounts: {
-    env: 'TEST_ACCOUNTS',
-    description: 'Whether to populate the genesis state with initial fee juice for the test accounts.',
-    ...booleanConfigHelper(),
-  },
-  sponsoredFPC: {
-    env: 'SPONSORED_FPC',
-    description: 'Whether to populate the genesis state with initial fee juice for the sponsored FPC.',
-    ...booleanConfigHelper(false),
-  },
 };
 
 /**
diff --git a/yarn-project/aztec/src/cli/aztec_start_action.ts b/yarn-project/aztec/src/cli/aztec_start_action.ts
index c4b7c8e506e3..af1e3e159916 100644
--- a/yarn-project/aztec/src/cli/aztec_start_action.ts
+++ b/yarn-project/aztec/src/cli/aztec_start_action.ts
@@ -26,6 +26,7 @@ export async function aztecStart(options: any, userLog: LogFn, debugLogger: Logg
     const cliVersion = getCliVersion();
     const sandboxOptions = extractNamespacedOptions(options, 'sandbox');
     const nodeOptions = extractNamespacedOptions(options, 'node');
+    sandboxOptions.testAccounts = true;
     userLog(`${splash}\n${github}\n\n`);
     userLog(`Setting up Aztec Sandbox ${cliVersion}, please stand by...`);
 
diff --git a/yarn-project/aztec/src/cli/aztec_start_options.ts b/yarn-project/aztec/src/cli/aztec_start_options.ts
index 852176c80d75..d5ff12e2c9cc 100644
--- a/yarn-project/aztec/src/cli/aztec_start_options.ts
+++ b/yarn-project/aztec/src/cli/aztec_start_options.ts
@@ -84,12 +84,6 @@ export const aztecStartOptions: { [key: string]: AztecStartOption[] } = {
       defaultValue: undefined,
       envVar: undefined,
     },
-    {
-      flag: '--sandbox.testAccounts',
-      description: 'Deploy test accounts on sandbox start',
-      envVar: 'TEST_ACCOUNTS',
-      ...booleanConfigHelper(true),
-    },
     {
       flag: '--sandbox.noPXE',
       description: 'Do not expose PXE service on sandbox start',
@@ -269,12 +263,6 @@ export const aztecStartOptions: { [key: string]: AztecStartOption[] } = {
       envVar: 'WS_BLOCK_CHECK_INTERVAL_MS',
       parseVal: val => parseInt(val, 10),
     },
-    {
-      flag: '--node.testAccounts',
-      description: 'Populate genesis state with initial fee juice for test accounts',
-      envVar: 'TEST_ACCOUNTS',
-      ...booleanConfigHelper(),
-    },
   ],
   'P2P SUBSYSTEM': [
     {
diff --git a/yarn-project/ethereum/src/config.ts b/yarn-project/ethereum/src/config.ts
index a519f426c949..4d31e6736972 100644
--- a/yarn-project/ethereum/src/config.ts
+++ b/yarn-project/ethereum/src/config.ts
@@ -1,12 +1,20 @@
 import {
   type ConfigMappingsType,
   bigintConfigHelper,
+  booleanConfigHelper,
   getConfigFromMappings,
   numberConfigHelper,
 } from '@aztec/foundation/config';
 
 import { type L1TxUtilsConfig, l1TxUtilsConfigMappings } from './l1_tx_utils.js';
 
+export type GenesisStateConfig = {
+  /** Whether to populate the genesis state with initial fee juice for the test accounts */
+  testAccounts: boolean;
+  /** Whether to populate the genesis state with initial fee juice for the sponsored FPC */
+  sponsoredFPC: boolean;
+};
+
 export type L1ContractsConfig = {
   /** How many seconds an L1 slot lasts. */
   ethereumSlotDuration: number;
@@ -114,6 +122,23 @@ export const l1ContractsConfigMappings: ConfigMappingsType<L1ContractsConfig> =
   ...l1TxUtilsConfigMappings,
 };
 
+export const genesisStateConfigMappings: ConfigMappingsType<GenesisStateConfig> = {
+  testAccounts: {
+    env: 'TEST_ACCOUNTS',
+    description: 'Whether to populate the genesis state with initial fee juice for the test accounts.',
+    ...booleanConfigHelper(false),
+  },
+  sponsoredFPC: {
+    env: 'SPONSORED_FPC',
+    description: 'Whether to populate the genesis state with initial fee juice for the sponsored FPC.',
+    ...booleanConfigHelper(false),
+  },
+};
+
 export function getL1ContractsConfigEnvVars(): L1ContractsConfig {
   return getConfigFromMappings(l1ContractsConfigMappings);
 }
+
+export function getGenesisStateConfigEnvVars(): GenesisStateConfig {
+  return getConfigFromMappings(genesisStateConfigMappings);
+}
diff --git a/yarn-project/prover-node/src/config.ts b/yarn-project/prover-node/src/config.ts
index 924f603d81bb..319ab66f0da9 100644
--- a/yarn-project/prover-node/src/config.ts
+++ b/yarn-project/prover-node/src/config.ts
@@ -1,11 +1,7 @@
 import { type ArchiverConfig, archiverConfigMappings } from '@aztec/archiver/config';
 import type { ACVMConfig, BBConfig } from '@aztec/bb-prover/config';
-import {
-  type ConfigMappingsType,
-  booleanConfigHelper,
-  getConfigFromMappings,
-  numberConfigHelper,
-} from '@aztec/foundation/config';
+import { type GenesisStateConfig, genesisStateConfigMappings } from '@aztec/ethereum';
+import { type ConfigMappingsType, getConfigFromMappings, numberConfigHelper } from '@aztec/foundation/config';
 import { type DataStoreConfig, dataConfigMappings } from '@aztec/kv-store/config';
 import { type P2PConfig, p2pConfigMappings } from '@aztec/p2p/config';
 import {
@@ -33,12 +29,8 @@ export type ProverNodeConfig = ArchiverConfig &
   TxSenderConfig &
   DataStoreConfig &
   ProverCoordinationConfig &
-  SpecificProverNodeConfig & {
-    /** Whether to populate the genesis state with initial fee juice for the test accounts */
-    testAccounts: boolean;
-    /** Whether to populate the genesis state with initial fee juice for the sponsored FPC */
-    sponsoredFPC: boolean;
-  };
+  SpecificProverNodeConfig &
+  GenesisStateConfig;
 
 type SpecificProverNodeConfig = {
   proverNodeMaxPendingJobs: number;
@@ -92,16 +84,7 @@ export const proverNodeConfigMappings: ConfigMappingsType<ProverNodeConfig> = {
   ...getTxSenderConfigMappings('PROVER'),
   ...proverCoordinationConfigMappings,
   ...specificProverNodeConfigMappings,
-  testAccounts: {
-    env: 'TEST_ACCOUNTS',
-    description: 'Whether to populate the genesis state with initial fee juice for the test accounts.',
-    ...booleanConfigHelper(false),
-  },
-  sponsoredFPC: {
-    env: 'SPONSORED_FPC',
-    description: 'Whether to populate the genesis state with initial fee juice for the sponsored FPC.',
-    ...booleanConfigHelper(false),
-  },
+  ...genesisStateConfigMappings,
 };
 
 export function getProverNodeConfigFromEnv(): ProverNodeConfig {